74ACT257B中文資料意法半導體數(shù)據(jù)手冊PDF規(guī)格書
74ACT257B規(guī)格書詳情
DESCRIPTION
The 74ACT257 is an advanced high-speed CMOS QUAD 2-CHANNEL MULTIPLEXER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS tecnology. It is composed of an independent 2-channel multiplexer with common SELECT and ENABLE (OE)inputs. It is a non-inverting multiplexer. When the ENABLE input is held HIGH, the outputs are forced to a high impedance state. When the SELECT input is held LOW, A data is selected; when SELECT input is held HIGH, B data is selected.
■ HIGH SPEED: tPD = 5 ns (TYP.) at VCC = 5V
■ LOW POWER DISSIPATION: ICC = 4 μA(MAX.) at TA=25°C
■ COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.), VIL = 0.8V (MAX.)
■ 50? TRANSMISSION LINE DRIVING CAPABILITY
■ SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN)
■ BALANCED PROPAGATION DELAYS: tPLH ? tPHL
■ OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V
■ PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 257
■ IMPROVED LATCH-UP IMMUNITY
產(chǎn)品屬性
- 型號：
74ACT257B
- 功能描述：
編碼器、解碼器、復用器和解復用器 Quad 2-Ch Multiplexr
- RoHS：
否
- 制造商：
Micrel
- 產(chǎn)品：
Multiplexers
- 邏輯系列：
CMOS
- 線路數(shù)量（輸入/輸出）：
2/12
- 傳播延遲時間：
350 ps, 400 ps
- 電源電壓-最大：
2.625 V, 3.6 V
- 電源電壓-最?。?/span>
2.375 V, 3 V
- 最大工作溫度：
+ 85 C
- 安裝風格：
SMD/SMT
- 封裝/箱體：
QFN-44
- 封裝：
Tray
| 供應商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
FAIRCHILD/仙童 |
23+ |
NA/ |
2069 |
優(yōu)勢代理渠道,原裝正品,可全系列訂貨開增值稅票 |
詢價 | ||
FSC |
23+ |
NA |
20000 |
全新原裝假一賠十 |
詢價 | ||
FAIRCHILD |
23+ |
NA |
19960 |
只做進口原裝,終端工廠免費送樣 |
詢價 | ||
FSC |
21+ |
TSSOP16 |
2069 |
原裝現(xiàn)貨假一賠十 |
詢價 | ||
FAIRCHILDSEMICONDUCTOR |
23+ |
NA |
1535 |
專做原裝正品,假一罰百! |
詢價 | ||
NSC |
SOP3.9 |
608900 |
原包原標簽100%進口原裝常備現(xiàn)貨! |
詢價 | |||
FSC |
23+ |
SOP |
3200 |
全新原裝、誠信經(jīng)營、公司現(xiàn)貨銷售 |
詢價 | ||
ON |
1815+ |
SOP16 |
6528 |
只做原裝正品現(xiàn)貨!或訂貨,假一賠十! |
詢價 | ||
HAR |
24+ |
DIP |
167 |
詢價 | |||
Fairchild/ON |
22+ |
16TSSOP |
9000 |
原廠渠道,現(xiàn)貨配單 |
詢價 |
